Hypomineralization of Enamel
Conditions
Keywords
preformed metal crowns, Hall technique
Brief summary
Hypomineralised primary second molars are primary molars with a developmental disorder of the enamel. Preformed metal crowns already have good results for the treatment of caries on primary molars. In this study the aim is to investigate the clinical success and overall survival of preformed metal crowns as a treatment for hypomineralised primary molars. The crowns were placed using the Hall technique which is a simplified way of placing these crowns.
Interventions
OTHERPlacing preformed metal crowns using Hall technique.
Preformed metal crowns (3M™ ESPE™ STAINLESS STEEL CROWNS) were placed after using separation elastics (Dentalastics® separators, DENTAURUM). The crowns were cemented using is a self-curing, radiopaque, fluoride-releasing, resin-modified glass ionomer luting cement (Ketac™ Cem Plus Luting Cement, 3M™ ESPE™). The technique used to place the crowns was the Hall technique (technique without tooth preparation).
Sponsors
Universitaire Ziekenhuizen KU Leuven
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
24 Months to 144 Months
Healthy volunteers
No
Inclusion criteria
* age 2-12 years * American Society of Anesthesiologists(ASA)-score I: healthy patient * hypomineralisation grade: 2-6 * caries with an International Caries Detection and Assessment System (ICDAS)- score: 0-3 * limited provoked pain complaint
Exclusion criteria
* caries with an ICDAS-score: 4-6 * pulpitis pain complaints * infection (clinical and/or radiographic) * \>1/3 root resorption * allergies to the used materials
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The clinical success of preformed metal crowns using Hall technique on hypomineralised second primary molars based on clinical acceptable results. | 1-2 year | The results are clinical acceptable when there are no clinical signs of infection of the tooth, no caries development or heavy bleeding of the gingiva (after probing). |
| The overall survival rate of preformed metal crowns using Hall technique on hypomineralised second primary molars is defined as acceptable clinical outcomes. | 1-2 year | The outcomes are clinically acceptable when there are no signs of infection (abscess) or caries. |
| The overall survival rate of preformed metal crowns using Hall technique on hypomineralised second primary molars is defined as acceptable radiographical outcomes. | 1-2 year | The outcomes are radiographical acceptable when no signs of infection or interproximal bone loss are seen on the radiographs. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The results can be affected by bruxism. Signs of bruxism will not mean failure. We will rate the wear as acceptable or successful. This bruxism will be measured by clinical signs of wear on the crowns. | 1-2 year | When the wear of the crown is limited to minimal loss of metal, it is rated successful. When the wear is going through the full thickness of the crown until the underlying tooth structure, it is rated as acceptable. |
| The oral hygiene of the patient will be measured using the Simplified Oral Hygiene Index. The minimum value is 0: clean. The maximum value is 3: tooth surface covered with >2/3 soft dental plaque. The higher the score, the worse the outcome. | 1-2 year | Oral hygiene of the patients scored as debris \>1/3 of the crown surface is scored as bad oral hygiene. Bad oral hygiene implies a higher prevalence of (heavy) bleeding of the gingiva after probing. Which has a significant influence on the clinical success of the crowns. |
Countries
Belgium
Contacts
Primary ContactDominique Declerck, Prof. Dr.
Backup ContactEmily Mampay
Outcome results
None listed